Collection of the best gaming console emulators compatible with Mac OS X.
NEStopia (NES emulator)
ZSNES (SNES emulator)
Sixtyforce (N64 emulator)
SMS Plus (Sega Master System emulator)
Genesis Plus (Sega Genesis emulator)
Stella OS X (Atari 2600 emulator)(Some games included)
Download some ROMs at CoolRom, RomBay, DopeRoms, or any other rom sites you can think of and enjoy.